Road-grader.



No. 879,970. PATENTED FEB. 25, 1908. J. V. KRUSE.

ROAD GRADER.

APPLICATION FILED FEB.16, 1907.

51 vwenkn attorneys tion thereto.

PATENT OFFICE.

JOHN V. KRUSE, OF VIRGINIA, ILLINOIS.

noAD-GRArnEBt Specification of Letters Patent.

Patented Feb. 25, 1908.

Application filed February 16.1907. Serial No. 367.622.

To all whom it may concern:

Be it known that I, JOHN V. KRUsE,,citizen of the United States, residing at Virginia, in the county of Cass'and State of Illinois, have invented certain new and useful Improvements in Road-Graders, of which the ollowing is a specification.

This invention provides a novel attachment for the scra er of machines employedfor leveling or gra i'ng roads, the pur ose being to reduce the cost of grading an to materially lessen the draft usually required for.

to be had to the following description and accompanying drawings, in which:

Figure l is a perspective view of the scraper showing the application of the inven- Fig. 2 1s a vertical sectional view about on the line xx of Fig. 1 showin the parts on a larger scale. Fig. 3 is a deta perspective view of the slide and a ortionof the guides cooperating therewith il ustrating the disk beam in dotted lines.

Co'rres ending and like parts are referred to in the fo owing description and indicated in all the views of the drawings by the same reference characters.

The scraper blade 1 may beof any formation being preferably made concave on its front side and is suspended from the body of a wheel scraper by any suitable means such as the hangers shown. The disk beam 3 is pivoted at 4 to the scraper 1 and is provided at its opposite end with the disk 5. A plate 6 is secured to the rear side of the scraper near one end and reinforces the same. Irons or buckets 7 are riveted to or otherw1se fastened to the rear side of the scraper 1 at opslide 9 operates vertically between the bars 8 and is provided u on its outer face with a pair of pins 10 whic embrace the disk beam 3 whereby the disk can be raised or lowered through the medium of the slide. An adjusting screw 11 is mounted in the brackets 7 and has a threaded connection with the slide 9 whereby upon turning the said screw the slide 9 is moved with reference to the scraper with the result that the disk is raised or lowered as required. For convenience in turning the said screw it is provided at its upper end with a crank handle 12.

The disk 5 is preferably arranged at an anle of about forty-five degrees (45) to the irection of movement of the scraper and when lowered into operative position serves to form a ditch or cutter'along one side of the road, the earth which is displaced thereby being deposited in front of the scraper blade whereby it is moved toward the center or crown of the road. This disk also has the advantage of enabling the grader to be read-- ily employed upon earth which has been tightly compacted, or which has become overgrown with grass or weeds, and which would therefore offer considerable difficulty to the ordinary road grader. The depth of the gutter formed by the disk can be readily adjusted by elevating or depressin the disk through the medium of the threadec l stem 11,

and when desired the said disk can be raised into an inoperative position and the scraperv emlployed in the customary manner.

aving thus described the invention, what is claimed as new is:

1. In a road grader, the combination of a scraper, a disk mounted in cooperative relascraper, a disk beam. pivoted to the scra er,

a disk mounted upon the said beam, a s ide mounted upon the scraper and having an operative connection with the beam, and means for moving the slide to throw the disk into and out of operative position.

4. In a road grader,the-combination of a scraper, a disk beam pivoted to the scraper, p In testimonywher'eoi I iafiix my signature a disk carried by the earn,- a shde mounted in presence of two witnesses.

upon the scra er-and having an operative I connection wit the beam, and an adjusting O K 1 screw engagin the slide for moving the same Witnesses:

to throw the isk into and out of operative F, M. ROBERTSON,

position. V. E. RoBERTsoN. 

